﻿jQuery.fn.numeric = function () {

    return this.each(function () {
        $(this).keydown(function (e) {
            var key = e.which || e.keyCode;

            if (!e.shiftKey && !e.altKey && !e.ctrlKey &&
            // numbers   
                         key >= 48 && key <= 57 ||
            // Numeric keypad
                         key >= 96 && key <= 105 ||
            // comma, period and minus, . on keypad
                        key == 190 || key == 188 || key == 109 || key == 110 ||
            // Backspace and Tab and Enter
                        key == 8 || key == 9 || key == 13 ||
            // Home and End
                        key == 35 || key == 36 ||
            // left and right arrows
                        key == 37 || key == 39 ||
            // Del and Ins
                        key == 46 || key == 45)
                return true;

            return false;
        });
    });
};